2287145

Information

• Patent Grant
• 2287145

• References
• Source

• Patent Number

  2,287,145

• Date Filed

  Not available

• Date Issued

  Tuesday, June 23, 1942
  82 years ago

• CPC

  • G03B41/04 - with optical compensator

• US Classifications

  • 430 - Radiation imagery chemistry: process, composition, or product thereof
  • 359 - Optical: systems and elements
  • 396 - Photography